Disabling defective blocks in a partitioned CAM device

Details Disabling defective blocks in a partitioned CAM device Disabling defective blocks in a partitioned CAM device

2008-01-29

2008-01-29

Thai, Tuan V. (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S100000, C711S154000, C365S049130

Reexamination Certificate

active

07325091

ABSTRACT:
A CAM device having a plurality of CAM blocks includes circuitry to disable one or more defective CAM blocks, and to selectively translate address space in the disabled CAM blocks to the remaining enabled CAM blocks. In one embodiment, each CAM block is coupled to a corresponding block select circuit and to an address translation circuit. Each block select circuit provides a select signal to a corresponding CAM block to selectively enable or disable the CAM block. The address translation circuit includes logic that translates address space from disabled (e.g., defective) CAM blocks to enabled (e.g., non-defective) CAM blocks. During read and write operations, an address to access a row in a first of the CAM blocks is received into the address translation logic. If the first CAM block is disabled, the address translation logic translates the address to access a row in a second of the CAM blocks. Conversely, if the first CAM block is enabled, the address translation logic facilitates access to the row in the first CAM block.

REFERENCES:
patent: 4785398 (1988-11-01), Joyce et al.
patent: 5359720 (1994-10-01), Tamura et al.
patent: 5524231 (1996-06-01), Brown
patent: 6240485 (2001-05-01), Srinivasan et al.
patent: 6324087 (2001-11-01), Periera
patent: 6615310 (2003-09-01), Ridings
patent: 6657878 (2003-12-01), Lien et al.
patent: 6671771 (2003-12-01), Perloff
patent: 6831850 (2004-12-01), Pereira et al.
patent: 2002/0075714 (2002-06-01), Pereira et al.

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